Spark-arrester



(No Model.)

G. B. NICHOLS.

SPARK ARRBSTER.

Patented Peb. 21,1882.

Il] I fmfenor UNITED STATES PATENT OFFICE.

GEORGE B. NICHOLS, OF GALVESTON, TEXAS.

SPARK-ARRESTER.

SPECIFIGA'IION- forming part of Letters Patent No. 253,883, datedFebruary 21, 1882.

Application tiled November' 7, 1881.

To all whom it may concern:

Be it known that I, GEORGE B. NICHOLS, of Galveston, in the county ofGalveston and State of Texas, have invented a new and useful Improvementin Locomotive Spark-Arresters; and I do hereby declare the following tobe a full, clear, and exact description thereof, refer 'ence being hadto the accompanying drawings, forminga part of this specication, inwhich- Figure lis a front and vertical sectional view of my improvement.Fig.2 is an enlarged view in vertical section of the extinguishingnozzles and pipes with their attachment.

Like letters of reference indicate like parts wherever they occur.

My invention relates to an improvement in spark arresters andextinguishers for locomotiveengines; and it consists in the constructionand arrangement of devices by means of which the sparks are extinguishedand discharged onto the road-bed.

I will now describe my invention, so that others skilled in the art maymanufacture the same.

Inside of the smoke-stack of the locomotive is an inner pipe, A, intowhich the smoke and sparks arecarried by the steam which is dischargedinto the lift-pipe. Over and above the top ofthe pipe A is a cone orcylinder having the top closed by a diaphragm, so that the sparks fromthe pipe A shall strike against the diaphragm and will fall into thespace O between the inner pipe, A, andthe smoke-stack. Opening out ofthe space C, at the bottom of the same, are pipes D,through which thesparks pass from the space C.

Around the lower ends of the pipes D are chambers F, the lower portionsof which are in shape like the frustum of a cone, at the end of which isan opening smaller than the opening at the lower ends of thepipes D.These chambers F are fastened or secured to the pipes D by means ofset-screws I, by means of which the chamber may be raised or lowered, soas to increase or diminish the space between the openings ofthe pipes Dand the openings of the chambers F.

Discharging into the space between the delverypipes D and the shell ofchambers F are pipes G, Iwhich conduct water or steam from the boiler tothe chambers F, whence it passes (No model.)

into the annular space K, where, meeting the sparks and cinders as theypass out of the pipes D, it causes the extinguishment of the sparks.

Inside ot' the pipes D, near their lower ends, are auxiliary steam-pipesL, and discharging steam upward toward the openings of the chambers Fare other auxiliary steam-pipes, M.

The operation of my device is as follows rIhe sparks, cinders, and smokepassing up the pipe A, the cinders and sparks strike against thediaphragm B and fall into the space O; thence they pass through thepipes D into the annular space K, where, meeting the steam or water jetsfrom pipes G, L, and M, the sparks are extinguished and are carried outthrough the opening in the chambers F and fall onto the road-bed.

The advantages of my invention are that the sparks are completelyextinguished and are discharged as cinder onto the road-bed instead ot'being thrown into the air in an ignited state.

I am aware thatdeviceshave been constructed by which sparks have beenconveyed from the s1noke-stack to the fire-box and to a box placed underthe locomotive, and also that pipes have been used to convey sparks, inwhich pipes steam or water was used, but the steam and water wereintroduced into the place at or near the top, and therefore this devicewas impracticable, owing to the caking of the dirt in the pipes, therebyclogging them up. I do not claim these devices; but,

Having thus described myinvention, what I do claim, and desire to secureby Letters Patent, is

l. In a locomotive-en gine, a pipe or pipes for conveying sparks fromthe smoke stack, in combination with a diaphragm or cone placed in thestack and a steam or water chamber placed around the discharge of saidpipe or pipes.

A 2. In locomotiveengines, a pipe or pipes for conveying the sparks andcinders from a stack, in combination with water or steam chambers andsteam or water jets, substantially as and for the purposes described.

3. The downwardlydischarging steam or water chambers F F, surroundingthe delivery; pipes D D, in combination with means, sub stantially asdescribed, for supplying steam or ICO water thereto, substantial] y asand for the pur- K, substantially as and for the purpose dcposedescribed. scribed.

4. The steam or Water chambers F F, having 7. The steam or Waterjets Mand L, in com- I5 conical lower ends, in combination with sparkbinationwith spark-delivery pipes and chamdeliverypipes, substantially as andfor the purber F, substantially as and for the purpose depose described.scribed.

5. The chambers F F, having the opening` at In testimony whereof l havehereunto set my their lower ends smaller in aree than the openhand. iings ofthe delivery-pipes D D, substantially GEORGE B. NICHOLS. 1o asand for the purposes described. Witnesses:

6. The combination ofthe chambers F F and CHARLES B. LEE, the set-screwsfor regulating the annular space ARTHUR E. LYTLE.

